Saw-sharpening machine



(No Model.) 2 Sheets-Sheet 1.

L. P. HALLADAY. SAW SHARPENING MACHINE.

No. 466,411. Patented Jan. 5, 1892.

' (NoModeL) 2 sheets-sheet 2.

L. P. HA LLADAY. SAWSHARPENING MACHINE.

No. 466,411. Patented Jan. 5, 1892.

jffafzzegl I UNITED STATES P TENT OF ICE.

LEWIS .P. HALLADAY, OF CHIGAGO, ILLINOIS, ASSIGNOR TO THE -MA RION CYCLE COMPANY, OF MARION, INDIANA.

SAW-SHARPENING MACHINE.

SPECIFICATION forming part of Letters Patent No. 466,411, dated January 5, 1892.

' Application filed March 11, 1891. Serial 110.384.6367. (No model.) 7

To all whom it may concern:

Be it known that I, LEWIS P. 'HALLADAY, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Saw Sharpening Machines, of which the following is a specification.

My invention relates to saw-sharpening m achines, and has for its object to provide simple and convenient means for adjusting. It

is illustrated in the-accompanying drawings,

wherein-- Figure 1 is a front view of the machine,

Fig. 2, a plan View of a portion of the machine; Fig. 3, a rear View with parts removed.

Like parts are indicated by the same letters in all figures.

A is the supporting-frame; B, the saw; B, the saw-clam p B B guiding-lugs; A, a slide supported upon the table A and the frame A and carrying the part'C, which is provided with the slot C, through which passes the bolt C into the slide A. The part C has'a lug C which projects into a slot A in the slide A and which receivesthe screw end of the adj usting screw-bolt C D is a cam pivoted to the piece C by the bolt D at one end and adj ustably secured at the other by the bolt D which passes through the slot D The slide A is pivoted to the pitman E, which is driven by the eccentric E of the driving-shaft E Adj ustably secured upon the frame A and rising therefrom is the rectangular frame F,

.7 in which is a guideiin which moves the vertical sliding frame G.- This frame is fitted with the ledges G G, as shown, and carries upon one side the arms G2 G whereby the arbor G with the grinding-wheel Cr and drivingpulleys G G, are supported. The frame is pivoted at F and adj ustably secured by bolts and slots at F F The sliding frame has a bar from which, on the side opposite to the Saw-arbor, projects the guide II, in which is the sliding block H carrying at its lower end the wheel H and at its upper end an adj ustable setting-bolt H J is an eccentric on the outer extremity of the driving-shaft, from which leads the pitman J, which is connected so as to operate the feed-finger K.

' The useaud operation of my machine are asfollows: When the driving-shaft is set in operation in the usual manner in saw-sharpeningmachines, a reciprocating motionis given to the slide A. The piece D. having been set upon its supporting-piece C at the desired angle and the supporting-piece C having been fixed by means of the screw-bolt C at the desired position, it is evident that the wheel H being engaged by the surface of the cam D as it reciprocates, will rise and fall, thus carrying with it the sliding frame G and the arbor and grinding-wheel. This operation is evidently capable of various adjustments, as just indicated, by operating the screw-bolt H and by setting the frame F, as desired. The feed-finger is driven in like manner, and the pitman is operated by the driving-shaft E so that the grinding-wheel and saw move simultaneously with or in proper relation to each other. The frame G, being capable of vertical reciprocation on the frame F and carrying the shaft or arbor of the grinding-wheel G, will of 'course raise and lower the same, and this raising and lowering may be adjusted so as to give the proper motion to the grindingwheel to form the front and back of the teeth. Manifestly this motion must vary with the variations in the character and condition of the saws to be sharpened, and of course the raising and lowering must be intermittent and related to the movement of the feed-finger in the usual manner. On the driving-shaft,therefore, I have placed an eccentric and pitman and connected the same with the reciprocating part A. This part carries the liftingblock, having the inclined surface or cam, and this latter inclined surface in such process of reciprocation is so disposed as to engage the roller H and cause the same, together with the frame G and the grinding-wheel G", to rise. It will of course rise to the proportion and extent at which the cam is applied. I have therefore pivoted the cam D so that it may be raised or lowered to make the surface higher or lower. I have also arranged the adjustingscrew C by means of which the distance of the surface from the shaft may be varied. By these two adjustments I am able to give a wide range of variation to the rising-and-falling movement of the grinding-wheel. Moreover, it will be observed that by the arrangement of parts the grinding-Wheel, which must be lifted so as to remain in its normal plane, is lifted by the pressure of the wheel 1-1 against the surface or cam, which pressure will be applied almost parallel to that plane. Hence very little power is required to raise and lower the grinding-Wheel.

The feed-finger devices illustrated are designed. to render the adjustment of the feedfinger easy and its motion smooth and satisfactory.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is as follows:

1. In a saw-sharpening machine, the combination of a grinding-wheel, a support therefor capable of reciprocations to and from the saw, and a reciprocating block having an inclined surface adapted to be applied to the grinding-wheel support to move the same up and down.

2. In a saw-sharpening machine, the combination of a grinding-wheel, a support there for capable of reciprocations to and from the saw, and a reciprocating block having an inclined surface adapted to be applied to the grinding-wheel support to move the same up and down, and means for moving said inclined surface toward the grinding-wheel in the process of lifting the same.

LEWIS P. IIALLADAY.

\Vitnesses:

CELESTE P. CHAPMAN, HARRIET M. DAY. 

